On one sheet, gather your data with formulas like
='81001'!E2
Then chart the resulting data
best wishes
--
Bernard Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
"אביאל" wrote in message
...
I want to define the data soutce of a chart from multiple different
worksheets in a way that all the data will be in the same series because
I'm
using trend line.
I've tried just refering like: ='81001'!$E$2:$F$71+'81002'!$E$2:$F$93
but received an error.